Environmental groups may yet be heard on whether safety questions should stand in the way of the Davis-Besse nuclear plant’s license being renewed for another 20 years.

The Atomic Safety and Licensing Board is scheduled to hear arguments next week on whether to consider safety complaints filed against the plant east of Toledo.

Anita Rios co-chairs the Green Party of Ohio, one of four groups contending that hairline cracks along the concrete protective barrier around the plant puts residents at risk of radiation exposure. The Toledo resident also thinks the operator of the plant, Akron-based FirstEnergy, has a bad history.